Bio of Bob Dopp & Sharon Stien

                    Creating Innovative IP for our Clients

Consultants to Battery, Fuel Cell and Hydrogen Generation Industries.
                    Design services and Electrochemical Evaluations.

Meeting your needs at DoppStein Laboratory

Meeting your needs at DoppStein Laboratory


DSE Capabilities

Develop hydrogen and oxygen generation cells from laboratory-made electrodes.

Develop gas electrodes specific for your needs. Current nano catalysts are proving to be nearly as active as Platinum for oxygen reduction at a fraction of the cost.

Develop battery and fuel cells from custom-made cathodes.

Electrochemical testing and evaluation of gas electrodes produced elsewhere for functionality and failure analysis. Testing includes electrochemical and impedance spectrographic analysis. Evaluation and recommendations follow thorough testing.

Creative approaches to client needs.

Skilled at cell manufacturing line design & troubleshooting.

Cell optimization studies and Cell failure analysis including internal and reference electrode work.

Creative electronic circuit designer and builder.  Have created many test and application circuits.

Government contract experience (e.g.: CECOM, SBIR grants)

Work closely with patent attorneys and Patent Office.  Substantial patent portfolio.

Mentor of young scientists and engineers to learn how to expand their horizons of thought. 


Water Electrolysis Equipment:

Many test reactors have been made both in the half-cell and whole cell design to optimize hydrogen (and oxygen) production in alkaline electrolytes.  Flat plate designs are running at high efficiencies in creative assemblies for robust performance in many applications.  Very high Energy Efficiency and high Rate electrolyzers are developed using complex catalyst formulations and unique physical designs.


Gas Electrode Expertise:

Developed and built a Laboratory Cathode Machine capable of producing gas diffusion cathodes from as little as 5 grams of active mix up to nearly continuous production. Experiments optimized the use of nano sized particles of nickel, cobalt, silver, their alloys and oxides to catalyze the reduction of oxygen with alkaline electrolytes. The results are cathodes which are as thin as .002" (.05 mm) and with ambient limiting currents well above 750 mA/cm2, and power over 500 mW/cm2. The mid-Tafel CCV is approaching that of a fully platinized cathode. Applications are metal air batteries and fuel cells. Testing of these electrodes include a wide array of electrochemical and impedance studies. 


Major Equipment Includes:

* Solartron S1287 Electrochemical Interface

* Solartron S1250 Frequency Response Analyzer

* Several Dedicated Laboratory Computers

* 2, Sorensen 20-50 Power supplies

* Dynatronix DPR 20-10-30 Reverse Pulse Power Supply

* DSE built wave-shape modifiers

* Electro Industry 12 amp and Digi 185 5 Amp power supplies

* Agelent 33120A Function Generator

* INSTEK GDS-1022 Oscilloscope

* Instrunet 16 channel A/D converter & test board

* Cathode half-cell Apparatus for cathode research and development

* DSE built Water Electrolysis test equipment

* Gas collecting & quantifying system for hydrogen and oxygen generation

* TGA for carbon ash and metallic loading studies

* Five-place analytical balance

* High temperature oven (1200C (2200F) Max)

* Drying oven (260C (500F) Max)

* Small environmental chambers

* Binocular microscope

* Monocular oil-immersion microscope